Firebase Multi Programming Language Suppport

Question

I have a quick question, is it possible to have multiple programming languages for the Firebase Server in Cloud Functions?

Answer 1

Each function must choose a single runtime for execution. You can provide any code that runs on that runtime. That code can originate from any number of languages. For example, if you target a nodejs runtime, you could provide JavaScript code that comes from a combination of JavaScript, TypeScript, and even Kotlin, all transpiled to JavaScript. The runtime doesn't care - it's going to just execute the JavaScript.

You can't combine incompatible languages. For example, you can't combine Swift and JavaScript, unless you somehow find a way to transpile the Swift to JavaScript.

Each function can have a different runtime. There is no requirement that all of your functions target the same runtime. However, if you're using the Firebase CLI for deployment, you can only target a nodejs runtime. If you want other runtimes, you'll have to use Google Cloud Platform tools (gcloud) to deploy the function.